Popsugar Health & Fitness Workouts 15-Minute Arm Workout Grab Your Dumbbells and Build Muscle With This 15-Minute Arm Workout 13 July 2018 by Tamara Pridgett View On One Page Photo 3 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 3 Plank Walks Begin in a full plank. Lower your right elbow to the mat and then your left, coming into an elbow plank. Put your right hand on the mat, and straighten your right elbow. Do the same on the left to return to a full plank. This completes one repetition. Do a total of 10 plank walks. Previous Next Start Slideshow Trainer TipsBody Weight15-Minute WorkoutsFitness TipsBodyweight ExercisesArm WorkoutsBeginner WorkoutsArm ExercisesStrength TrainingWorkouts